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Re: incorrect values of snr difference on wspr.live grafana page ? Possible bug-report
Hi Arne,
yes, I misunderstood the current reading in the map - though it would be great to use Grafana as a dashboard, on per station SNR values. With wsprdaemon-data we have the advantage that
Hi Arne,
yes, I misunderstood the current reading in the map - though it would be great to use Grafana as a dashboard, on per station SNR values. With wsprdaemon-data we have the advantage that
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By
ON5KQ
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#592
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Re: incorrect values of snr difference on wspr.live grafana page ? Possible bug-report
Hello,
I created that map when trying to implement a request by Clint. It does show the difference of spot count not the difference of SNR. I clarified the title and info text to prevent future
Hello,
I created that map when trying to implement a request by Clint. It does show the difference of spot count not the difference of SNR. I clarified the title and info text to prevent future
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By
admin
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#591
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incorrect values of snr difference on wspr.live grafana page ? Possible bug-report
This is again something for Arne, the developer of the great Grafana page wspr.live
The following may be a possible bug-report - I just want to notice:
The grafana page offers the possibility to
This is again something for Arne, the developer of the great Grafana page wspr.live
The following may be a possible bug-report - I just want to notice:
The grafana page offers the possibility to
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By
ON5KQ
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#590
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Re: Notes on Improving Station Noise Performance
Thanks Ulli, I hope it helps.
A revision is in the works with some practical techniques included. Look for it once I've cleaned up the spelling and such.
Glenn
Thanks Ulli, I hope it helps.
A revision is in the works with some practical techniques included. Look for it once I've cleaned up the spelling and such.
Glenn
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By
Glenn Elmore
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#589
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Re: Notes on Improving Station Noise Performance
Excellent notes, Glenn.... !
Many thanks for such documents...
regards,
Ulli, ON5KQ
Excellent notes, Glenn.... !
Many thanks for such documents...
regards,
Ulli, ON5KQ
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By
ON5KQ
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#588
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Notes on Improving Station Noise Performance
I'm starting this as a new topic because I'm afraid we are verging on severe topic drift where it has been. This is revision 02 of the earlier draft with an addition intended to help reconcile the
I'm starting this as a new topic because I'm afraid we are verging on severe topic drift where it has been. This is revision 02 of the earlier draft with an addition intended to help reconcile the
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By
Glenn Elmore
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#587
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Edited
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Re: Noise
John
That's helpful. It probably means that the conversion from CM to differential on your feedline is occuring on the antenna side of the T1-1. If you have a symmetric antenna, one on which you can
John
That's helpful. It probably means that the conversion from CM to differential on your feedline is occuring on the antenna side of the T1-1. If you have a symmetric antenna, one on which you can
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By
Glenn Elmore
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#586
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Re: Noise
Glenn,
Rob provided me with a T1-1 assembly months ago. Other than the first test with a 50-ohn load at the KIWI, I always use the T1-1.
John
Glenn,
Rob provided me with a T1-1 assembly months ago. Other than the first test with a 50-ohn load at the KIWI, I always use the T1-1.
John
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By
John
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#585
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Re: Noise
John,
If you can't find that PCB you (or anyone reading) can easily make something from an inexpensive TV/FM 4:1 transformer that will serve purpose:
The picture shows examples of a Mini-Circuits
John,
If you can't find that PCB you (or anyone reading) can easily make something from an inexpensive TV/FM 4:1 transformer that will serve purpose:
The picture shows examples of a Mini-Circuits
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By
Glenn Elmore
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#584
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WD will not install on the new Raspberry Pi 'bullseye' OS release
FYI, the WSJT-x packages are built for b'buster'. Until they support 'bullseye' WD can't be installed on it.
FYI, the WSJT-x packages are built for b'buster'. Until they support 'bullseye' WD can't be installed on it.
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By
Rob Robinett
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#583
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Re: Noise
I believe I sent John an assembled version of one of your T1-1 PCBs which he can use to break the ground loop as you have suggested.
--
Rob Robinett
AI6VN
rob@...
mobile: +1 650 218 8896
I believe I sent John an assembled version of one of your T1-1 PCBs which he can use to break the ground loop as you have suggested.
--
Rob Robinett
AI6VN
rob@...
mobile: +1 650 218 8896
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By
Rob Robinett
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#582
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Re: Noise
Do you have a low interwinding capacitance isolation transformer located at the KiWi SMA or can you at least temporarily try one? Wind a couple of turns on primary and secondary of a
Do you have a low interwinding capacitance isolation transformer located at the KiWi SMA or can you at least temporarily try one? Wind a couple of turns on primary and secondary of a
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By
Glenn Elmore
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#581
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Re: Noise
I think you are introducing too many variables.
Can you battery power your kiwis and somehow get to it over wifi?
Starting with such a configuration, then add the coax to your arrestor with a
I think you are introducing too many variables.
Can you battery power your kiwis and somehow get to it over wifi?
Starting with such a configuration, then add the coax to your arrestor with a
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By
Rob Robinett
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#580
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Re: Noise
At 2031z I removed GPS.
Waiting to see.
John
At 2031z I removed GPS.
Waiting to see.
John
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By
John
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#579
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Re: WSPR reports on 40M, also config includes only 20M
Gur,
I have done antenna design for a living... I can't recommend the EFHW for hardly anything! They are popular as they are easy but they are not effective. Startng with very QRP
Gur,
I have done antenna design for a living... I can't recommend the EFHW for hardly anything! They are popular as they are easy but they are not effective. Startng with very QRP
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By
Jim Lill
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#578
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Re: Noise
Today at 1900z I changed the 5 v power supply. From a 20 amp 5.25 v AC powered to an inline 12/5.2 buck converter.
10M to 40 m noise dropped 2--4 dbm, 60m to 630 noise went up. 160 up by 10 dbm.
John
Today at 1900z I changed the 5 v power supply. From a 20 amp 5.25 v AC powered to an inline 12/5.2 buck converter.
10M to 40 m noise dropped 2--4 dbm, 60m to 630 noise went up. 160 up by 10 dbm.
John
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By
John
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#577
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Re: WSPR reports on 40M, also config includes only 20M
Hi Gur,
I have very little experience with transmit antennas, but some successful WSPR Beacon sites have used EFHW.
You currently have 3 unused audio-only rx channels on your Kiwi. By adding 80, 30
Hi Gur,
I have very little experience with transmit antennas, but some successful WSPR Beacon sites have used EFHW.
You currently have 3 unused audio-only rx channels on your Kiwi. By adding 80, 30
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By
Rob Robinett
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#576
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Re: WSPR reports on 40M, also config includes only 20M
Hi Rob,
Thanks for checking up on it.
Sure. I had to run multiple tests to figure out why I wasn't intercepting my tiny 1gr WSPR transmitter.
Eventually solved my problem, and I can now stabilize my
Hi Rob,
Thanks for checking up on it.
Sure. I had to run multiple tests to figure out why I wasn't intercepting my tiny 1gr WSPR transmitter.
Eventually solved my problem, and I can now stabilize my
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By
Gur Lavie
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#575
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Re: Noise
I am back to my normal RX configuration. T1-1, AM filter, FM filterr.
I will do the GPS disconnect test and touch Antenna ground while KIWI is terminated to a dummy load test, Monday, Sunday is our
I am back to my normal RX configuration. T1-1, AM filter, FM filterr.
I will do the GPS disconnect test and touch Antenna ground while KIWI is terminated to a dummy load test, Monday, Sunday is our
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By
John
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#574
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Re: Noise
a quick disconnect of the gps antenna will check if that is a source and the unit will remain operational for that short period.
a quick disconnect of the gps antenna will check if that is a source and the unit will remain operational for that short period.
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By
Jim Lill
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#573
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